// GET: LearningMaterials/Edit/5
public async Task <IActionResult> Edit(int?id)
{
if (id == null)
{
return(NotFound());
}
LearningMaterialViewModel vm = new LearningMaterialViewModel();
var learningMaterial = await _context.LearningMaterial.FindAsync(id);
if (learningMaterial == null)
{
return(NotFound());
}
vm.learningMaterial = learningMaterial;
vm.instruments = _context.Instrument.Select(c => new SelectListItem
{
Value = c.Id.ToString(),
Text = c.Name
}).ToList();
vm.instruments.Insert(0, new SelectListItem()
{
Value = "0",
Text = "Please choose an Instrument"
});
return(View(vm));
}
//edit function, not easily accessible for the user, it's for the programmer
public async Task <IActionResult> Edit(int id, LearningMaterialViewModel vm)
{
if (id != vm.learningMaterial.id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(vm.learningMaterial);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!LearningMaterialExists(vm.learningMaterial.id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
return(View(vm.learningMaterial));
}
public async Task <IActionResult> Create(LearningMaterialViewModel vm)
{
if (ModelState.IsValid)
{
//adding the learning material from the view model to database
_context.Add(vm.learningMaterial);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
return(View(vm.learningMaterial));
}
// GET: LearningMaterials/Create
public IActionResult Create()
{
//instance of a view model
LearningMaterialViewModel vm = new LearningMaterialViewModel();
//Select List for instruments
vm.instruments = _context.Instrument.Select(c => new SelectListItem
{
Value = c.Id.ToString(),
Text = c.Name
}).ToList();
vm.instruments.Insert(0, new SelectListItem()
{
Value = "0",
Text = "Please choose an Instrument"
});
return(View(vm));
}
